As executive director of the Great Lakes Observing System, she’s leading a campaign to map every meter of the lakes’ bottom.

The ice coverage in Lake Erie has rapidly expanded to 80% this week. February and March are peak maximum ice coverage periods ...

To that end, the nonprofit Great Lakes Observing System, or GLOS, is asking ice fishing anglers and others who go out on the ice to gather and submit measurements of thickness, as well as observations ...

Since 1973, ice coverage has fallen by 77% on Lake Michigan and 71% on the Great Lakes as a whole. That has a far-reaching ...